fix(s1: GSC): make SP work with the new client update

scripts/mp/_team_balance.gsc

@@ -0,0 +1,23 @@
+init()
+{
+	// define onteamselection callback function used in balanceteams()
+	level.onteamselection = ::set_team;
+}
+
+set_team(team)
+{
+	if (team != self.pers["team"])
+	{
+		self.switching_teams = true;
+		self.joining_team = team;
+		self.leaving_team = self.pers["team"];
+	}
+
+	if (self.sessionstate == "playing")
+	{
+		self suicide();
+	}
+
+	maps\mp\gametypes\_menus::addtoteam(team);
+	maps\mp\gametypes\_menus::endrespawnnotify();
+}